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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 43801. |
Suniye anurag shweta naam se hogi ok or apni id public kar dijiye |
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| 43802. |
Does a pencil appear to be displaced to the same extend, if insted of water? Explain. |
| Answer» A pencil dipped in water appears to be bent at the interface of air and water due to the refraction of light. The refraction of light occurs because the speed of light changes when light travels from one medium to another. Therefore, the pencil will not appear to be bent to the same extent, when it is dipped in kerosene or turpentine. This is because refractive index of kerosene or turpentine is different than the refractive index of water and hence speed of light will be different in kerosene than that in water. | |
| 43803. |
From which book i should maje notes to get full marks in class 10 boards exam? Ncert or S chand |
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Answer» This year i.e 2019 exams..maths ka exam bilkul bhu ncert se nhu aya..sirf 2 ya 4 ques the..sare rd sharma se tha..so i suggst u to follow rd with the beginning of session..its my gurrantee that u will score 90+ in math exam NCERT is the best.Mai bhi NCERT se hi padhti hu.. |
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| 43804. |
Which is the better book for getting full marks in 10th board exam in science? |
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Answer» Schand books I think hame NCERT textbook se hi padna chahiye |
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| 43805. |
CO+O2 |
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Answer» Ca nhi ki CO nhi , C hota he . Ca matlab calcium he Ca nhi CO * Ca+O2=CO2 (Carbon dioxide) |
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| 43806. |
What is alveoli and bronchiole???? |
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Answer» Alveoli are the tiny air sacs material present on the Branchioles that helps in gaseous exchange in human.The part which comes out from bronchies are known as bronchioles Bronchiole are the passageways by which air passes through the nose or mouth to the alveoli of the lungs, in which branches no longer contain cartilage or glands in their submucosa. They are branches of the bronchi, and are part of the conducting zone of the respiratory system.. Alveoli are the tiny air sacs of the lungs which allows the rapid gaseous exchange. |
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| 43807. |
Why egg produce |
| Answer» Accha? | |
| 43808. |
On what basis is chemical equation balanced? |
| Answer» On the basis of no. of atoms of each element on both the sides of the equation. They should be equal. | |
| 43809. |
Why enzyemes are not present in food pipe or esophagus. |
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Answer» For absorption Because there is. No need of them |
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| 43810. |
Why is ammeter has less resistance than voltmeter? |
| Answer» Ammeter has less resistence so that more current can pass through it whereas voltmeter has high resistance so that only considerable amount of current can pass through it... | |
| 43811. |
Function of bile juice secreted by liver |
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Answer» Since\xa0bile\xa0increases the absorption of fats, it is an important part of the absorption of the fat-soluble substances, such as the vitamins A, D, E, and K. Besides its digestive\xa0function,bile\xa0serves also as the route of excretion for bilirubin, a byproduct of red blood cells recycled by the\xa0liver. It contains bilirubin and biliverdin It makes the medium alkaline and helps in emulsification of fats... |
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| 43812. |
Define with examples Saprotrophic nutrition |
| Answer» The mode of nutrition in which an organism obtains nutrients from dead and decaying organic matter is called saprophytic nutrition. Example - Rhizopus (bread mould), Mucor (pin mould), Yeast, Agaricus (mushroom) . | |
| 43813. |
Is earth rotating explain with example |
| Answer» Yup ,,,,,, cuz the magnetic force of sun and other planets | |
| 43814. |
What is diffusion?? |
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Answer» Osmosis water mein hota hai...or mene kahi water word mention nahi kiya..?? Intermixing of two or more particles is known as diffusion. Ye osmosis hai harshima ji The movement of molecules from a region of higher conc. To a region of lower conc. Is called diffusion. |
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| 43815. |
What is precipitation reaction ? |
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Answer» The chemical reaction in which a white coloured substance which is insoluble in water (precipitate) is formed then it is known as precipitation reactionNa2SO4 (aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)In this reaction Barium sulphate is a white colour precipitate and it is insoluble in water. That produces a precipitate |
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| 43816. |
Which book is best for revised,? |
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| 43817. |
What what would happen if the plasma membrane ruptures or breakdown? |
| Answer» Cell organelles will come in direct conatct with the surroundings leading to cell death | |
| 43818. |
What is the best book for FIT. |
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| 43819. |
How we can separate two miscible liquids |
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Answer» We separate a mixture of two miscible liquids by Distillation and fractional distillation.Simple distillation for those liquids which have varied boiling points , difference is + 30°C.While fractional distillation is for those liquids whose boiling point are between a difference of 0 - 30°C. By the process of fractional distillation method |
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| 43820. |
Where is photosynthesis process is complete |
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Answer» In talkoid of chloroplast In the leaves |
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| 43821. |
Photoreceptors |
| Answer» Photoreceptors are the cells in the retina that respond to light. Their distinguishing feature is the presence of large amounts of tightly packed membrane that contains the photopigment rhodopsin or a related molecule. The tight packing is needed to achieve a high photopigment density, which allows a large proportion of the light photons that reach the photoreceptor to be absorbed. Photon absorption contributes to the photoreceptor’s output signal.In the retina of vertebrates the rods and cones have photopigment-bearing regions (outer segments) composed of a large number of pancakelike disks. In rods the disks are closed, but in cones the disks are partially open to the surrounding fluid. In a typical rod there are about a thousand disks, and each disk holds about 150,000 rhodopsin molecules, giving a total of 150 million molecules per rod. In most invertebrate photoreceptors the structure is different, with the photopigment borne on regularly arranged microvilli, fingerlike projections with a diameter of about 0.1 μm. This photoreceptor structure is known as a rhabdom. The photopigment packing is less dense in rhabdoms than in vertebrate disks. In both vertebrate photoreceptors and rhabdoms, each photoreceptor cell contains a nucleus, an energy-producing region with mitochondria (in the inner segment in rods and cones), and an axon that conveys electrical signals to the next neurons in the processing chain. In reptiles and birds the receptors may also contain coloured oil droplets that modify the spectrum of the light absorbed by the photopigment, thereby enhancing colour vision. In insects and other invertebrates the receptors may also contain granules of dark pigment that move toward the rhabdom in response to light. They act as a type of pupil, protecting the rhabdom in bright conditions by absorbing light. | |
| 43822. |
Why iron is a good conductor |
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Answer» Due to the arrangement of protiens and electrones in it.It depends upon the electric confrigution of iron that allows it to conduct heat and electricity?? Dhanyawad ?? Usne free electrons hota hai bs |
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| 43823. |
What is electic current ? Hello everyone |
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Answer» Ya, it\'s flow of charge or electrons.. Electric current is the movement of charge per second in a particular area... Nd hii avani ? Flow of electrons |
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| 43824. |
Write equation of quick lime. |
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Answer» Quick lime toh CaO h ...iska reaction chahiye... Calcium hydroxide, Formula Ca(OH)2 |
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| 43825. |
How we defined nutrition |
| Answer» Nutrition is the transfer of energy from outside to inside the body...is known as nutrition | |
| 43826. |
Ch-8 ko hindi me smjhao |
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| 43827. |
What is conventional current |
| Answer» \tThe flow of electrons is termed electron current. Electrons flow from the negative terminal to the positive.\tConventional current or simply current, behaves as if positive charge carriers cause current flow.\tConventional current flows from the positive terminal to the negative. | |
| 43828. |
What Is mass? |
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Answer» The amount of matter contained by an object is called mass . It is the measure of its inertia.❤️❤️❤️?? Anything that occupies space and has volum is called as mass.Example:- chair,table,book,copy,pen & pencil etc. Mass is the volume of a sub. or the capacity of a vessle |
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| 43829. |
What is the difference between apliances and device |
| Answer» When used as nouns, appliance means a non-manual apparatus or device, powered electrically or by another small motor, used in homes to perform domestic functions (household appliance) and/or in offices, whereas device means any piece of equipment made for a particular purpose, especially a mechanical or electrical one. | |
| 43830. |
Differentiate between addition reaction and substitution reaction shown by hydrocarbons |
| Answer» \tThe reactions in which an unsaturated hydrocarbon combines with simple substances to form a single saturated product are addition reactions.\tThose reactions in which one or more hydrogen of a saturated hydrocarbon is replaced by an atom or a group of atoms are substitution reactions. | |
| 43831. |
(a)Describe the mechanism of cleansing actions of soaps?(B) why do soaps not work in hard water? |
| Answer» \tWhen soap is dissolved in water, its hydrophobic ends attach themselves to dirt and remove it from the cloth.\tFirst, the molecules of soap arrange themselves in micelle formation and trap the dirt at the centre of the cluster.\tThese micelles remain suspended in water like particles in a colloidal solution.\tThe various micelles present in water do not come together to form a precipitate as each micelle repels the other because of the ion-ion repulsion.\tThus, the dust particles remain trapped in micelles (which remain suspended) and are easily rinsed away with water.\t\xa0Hence, soap micelles remove dirt by dissolving it in water.2C7H35COONa + CaCl2 → 2 NaCl + C7H35COO)2 CaHard water contains calcium and magnesium ions. These ions form insoluble calcium and magnesium soaps respectively when soaps are dissolved in hard water.These insoluble soaps separate as scum in water and are useless as cleansing agent. Therefore, soaps are not work in hard water. | |
| 43832. |
why we need water |
| Answer» We need water to survive. It helps us in maintaining temperature of our body. | |
| 43833. |
What is reflectrd ray |
| Answer» Reflectrd ni reflected ray ?? | |
| 43834. |
Give a chemical test to distinguish betwern butter and cooking oil. |
| Answer» Butter is saturated compound and oil is unsaturated compound.Alk. potassium permanganate + unsaturated hydrocarbon → pink colour disappear(Pink colour) Therefore, when we add oil to a test tube containing alkaline potassium permanganate solution, the pink colour of the solution disappear. Colour of alkaline potassium permanganate will not disappear in the test tube containing butter. | |
| 43835. |
Explain the respiration? |
| Answer» The process of releasing energy from food is called respiration.The process of respiration involves taking in oxygen (of air) into the cells, using it for releasing energy by burning food, and then eliminating the waste products (carbon dioxide and water) from the body.Food + Oxygen → Carbon dioxide + Water + Energy\tThe process of respiration which releases energy takes place inside the cells of the body. So, it is also known as cellular respiration.\tRespiration is essential for life because it provide energy for carrying out all the life processes which are necessary to keep the organism alive. | |
| 43836. |
Give similarity and difference between starch and glycogen |
| Answer» Glycogen is a carbohydrate (polysaccharide). In animals, carbohydrates are stored as glycogen.Starch is a carbohydrate consisting of two components - amylose (15 - 20%) and amylopectin (80 - 85%).However, glycogen consists of only one component whose structure is similar to amylopectin. Also, glycogen is more branched than amylopectin. | |
| 43837. |
What causes opening and closing of stomata? |
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Answer» Opening of stomata: Solutes from neighbouring epidermal and mesophyll cells enter the guard cells lowering its osmotic potential and water potential. This lowered water potential and osmotic potential will allow movement of water into guard cells from neighbouring cells. Guard cells become turgid due to water accumulation in them which results in the opening of the guard cells.\xa0Closing of stomata: As the somata open the solute concentration is reduced. This makes the water from the guard cells to move away into neighbouring cells. Now, guard cells becom flaccid with no water. They collapse against each other and result in the closing of stomata. when stomata has water it is open and when no water it closes |
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| 43838. |
Why light not passing through an opaque medium? |
| Answer» Opaque materials do not allow transmission of light waves. We can only see the surface because the light waves are re-emitted from the surface to our eyes.... | |
| 43839. |
Balance this equation Ethane+oxygen-carbon dioxide+water |
| Answer» Ethane + oxygen → carbon dioxide + water2C2H6 + 7O2 → 4CO2 + 6H2O | |
| 43840. |
What is the cfc |
| Answer» Chloro floro carbon | |
| 43841. |
what cfc |
| Answer» Its chlorofluorocarbon(CFC), it is one of the green house gases which are responsible for ozone depletion. When UV rays from sun come into earth\'s atmosphere it strikes with many gases there in which cfc is one of them. When uv strikes CFC the C-Cl bond breaks and produces Cl atom which then treated with O3(ozone) and break its bond. | |
| 43842. |
What is. Polyatomic ions? Give example. |
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Answer» A group of atoms carrying a charge is known as polyatomic ion, example of polyatomic cation: NH4+ and polyatomic anion: NO3-. Polyatomic ions are ions which consist of more than one atom. For example, nitrate ion, NO3-, contains one nitrogen atom and three oxygen atoms. The atoms in a polyatomic ion are usually covalently bonded to one another, and therefore stay together as a single, charged unit. |
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| 43843. |
What is miosis and mytosis |
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Answer» Mitosis is the M-phase of the cell cycle. Mitosis results in the formation of two daughter cells identical to each other and also to the parent cell. Mitosis is also called as equational division as both the parent and the daughter cells have equal number of chromosomes. Mitosis involves four nuclear divisions namely, Prophase, Metaphase, Anaphase and Telophase.Meiosis is reductional phase of cell division. It involves the division of a diploid parent cell to give rise to haploid cells with single set of chromosomes. During fertilization, haploid cells fuse to restore the chromosome number in the offspring. Hence, meiosis maintains constant number of chromosomes of particular species. Mitosis is a type of cell division in which two daughter cells are formed from one parent cell and both daughter cells have equal number of chromosomes as in the parent cell. It occurs in somatic body cells..........Meiosis is a type of cell division in which four daughter cells are formed from one parent cell and each daughter cells have half the number of chromosomes as in the parent cell. It occurs in reproductive cells.............. Mitosis consists of one stage whereas meiosis consists of two stages. Mitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes). Mitosis produces two identical daughter cells whereas meiosis produces four genetically different daughter cells. Koi to bata do |
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| 43844. |
During electrolysis of water ? Write a balanced equation? |
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Answer» . Electrolysis of water is its decomposition to give hydrogen and oxygen gases due to the passage of an electric current.Electrolysis of water :-2H2O + electrical energy → O2 + 2H2 2H2O ---------------> 2H2 + O2 It is difficult to write the reaction on this app. Breaking down of water molecule into oxygen and hydrogen. whrn electric current is passed through it. |
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| 43845. |
The magnetic field intensity produce due to a current carrying coil is maxmium at |
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Answer» ...... At the centre region of the coil... |
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| 43846. |
What is super conduction? explain with an example. |
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Answer» It is super conduction or conductor Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic flux fields occurring in certain materials, called superconductors, when cooled below a characteristic critical temperature. Eg: ceramics |
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| 43847. |
What is lymph??? |
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| 43848. |
What is columb\'s law |
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Answer» there\'s no answer ? Wrong question |
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| 43849. |
What is the difference between photosynthesis and reproduction?? |
| Answer» Photosynthesis is the process in which plants prepare their food by using carbon dioxide , water in the precence of sunlight with the help of chlorophyll. On the other hand , reproduction is the process in which organism produces new individuals of their own kind . | |
| 43850. |
Write down the steps for performs starch test on a green leaf |
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